346 
90. ALISMACEJE. 
Suborder I. Alismoidea. 
1. Alis'ma Linn. Water Plantain. 
1. A. Plantago (L.) ; fl.-stalk panicled with whorled compound 
branches, carp, ranged in a circle compressed blunt obovate, stt/le 
below the top of inner edije of carp., 1. cordate-ovate or lanceolate. 
— E. B. 837. R. vii. t. 57. — L. all radical, on long stalks. Sub- 
mersed 1. linear. PI. -stalks 2 — .3 feet high. Fl. pale rose-colour. 
— ^. A. lanceolata (With.) ; 1, lanceolate narrowed below. — Bv 
water. P. VII. VDI. E. S. I. 
2. A. ranwmdoides (L.); fl.-stalks umbellate, carp, angidar 
acute forming a globose squarrose head, style terminal, 1. linear- 
lanceolate acute. — E. B. 326. R. vii. t. 55. — L. all radical, on 
long stalks. Fl.-stalks from 3 to 24: in. long, ending in 1 or 2 
umbellate whorls of simple peduncles. Fl. pale purple. — /3. A. 
repens (Dav. ) ; plant depressed, lunbels rooting and proliferous, 
fl. larger. E. B. S. 2722. — TurfV bogs. ^. By lakes in Wales 
and Scotland. P. VI. Vn. * E. S. I. 
3. A. nutans (L.) ; st. floating and rooting leafy, peduyicles 
simple from the joinings of the stem, caip. striate beaked, float- 
ing 1. stalked oblong blimt, radical leafless petioles linear-taper- 
ing. — E. B. 775. R. vdi. t. 54. — St. slender, often very long. 
Root-petioles in small tufts. Fl. rather large, white with a 
yellow spot. — Lakes, rare. P. VIII. E. I. 
2. AcTiNOCAE'ptJS B. Br. Thrumwort. 
1. A. Damas67uu7n (R, Br.) ; stalks with 1 — 3 whorls of fl., 
carp, subulate compressed opening longitudinally, 1. cordate-ob- 
long. — E. B. 1615. Alismu Sm. Damasonium stellatum Pers. 
— L. all radical, floating, on long stalks, 5-veined. Pet. white. 
Carp, large ; with 2 stalked seeds, 1 from the lower angle erect, 
the other from the upper homontal. — Ponds and ditches, rare. 
P. VI. VII. • E. 
3. Sagitta'eia Linn. Arrowhead. 
1. S. ■sagittif6lia (L.) ; aerial 1. arrowshaped with lanceolate 
straight lobes, fl.-stalk simple, fl. whorled. — E. B. 84. R. vii. 
t. 53. — Stolouiferous ; each i-unner ending in a tuber. The 1. 
that rise above the water are remarkably an'owshaped, with the 
3 parts neai'ly equal. The submersed leafless petioles are linear. 
Fl. white.— Ditches and rivers. P. VIII. E. I. 
Suborder II. Butomece. 
4. Bu'tomtts Linn. Flowering Rush. 
1. B. umbelldtns {l..).~E. B. 651. R. vii. t. 58.— Flow erst allc 
